The sexual affiliation of members in a marching band whom ACT homosexual, but the person whom is bandsexual would never have the intent of doing anything sexual with another person of the same sex. Bandsexuality is usually affiliated with the tuba and drumline sections in marching bands; particularly marching bands in the Midwest United States, especially in Ohio. (NOTE: Persons whom are classified as bandsexual usually have a boy/girlfriend and have most likely had sex with the opposite gender.)
The bandsexual tuba player humped the percussionist.
Seeming to only have a sexual attraction to a member in a band you love, and no one you encounter in your daily life.
Guy: I like you.
Girl: Sorry, I'm bandsexual.
Yanni sat in the back of the band room and inserted her saxophone inside of her and found God.